The global ranking of cities in 2017 is as follows:
1. London
2. New York
3. Tokyo
4. Paris
5. Singapore
6. Seoul
7. Amsterdom
8. Berlin
9. Hong Kong
10. Sydeney
http://mori-m-foundation.or.jp/english/ius2/gpci2/index.shtml
Among 10, four East Asia cities, or four Asian cities around the western Pacific are elected. In comparison, four western European cities are also elected.
However, two (Singapore and Hong Kong) of the Asian cities were once colonized by the UK. Seoul was once governed by the Japanese Government. Tokyo has never been colonized by any Western powers or China.
London is situated as the bridge between Europe and the US. New York is situated between Europe, including the UK, and other regions. However, Tokyo is the Asian city independent from European traditions and situated as the leading Asian city.
The UK once colonized many regions in the world. So, people from various tribes in the world came to live in London. Even the London Mayor is now Pakistani. New York is the commercial and financial center of the US built by immigrants not only from Europe but also from all over the world. Even Jewish people account for 13% of the New York population. But only 440,000
foreigners live in Tokyo with 9.2 million population. Tokyo is still a city of the Japanese race.
However, the most important city for the mankind is of course Jerusalem followed by Rome and Mecca in terms of religion.
And Tokyo is not a city of Judaists, Christians, or Muslims but of Buddhists, since most of the Japanese are associated with Buddhism. Tokyo must be still unique. And, Tokyo Governor Ms. Yuriko Koike has become head of the Kibono-to Party to complete with PM Abe in the ongoing lower-house election although she doesn't run for the election. In this context, Tokyo and Tokyo Governor are unique.